/**
 *  Copyright (c) 1997-2013, tinygroup.org (luo_guo@live.cn).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * --------------------------------------------------------------------------
 *  版权 (c) 1997-2013, tinygroup.org (luo_guo@live.cn).
 *
 *  本开源软件遵循 GPL 3.0 协议;
 *  如果您不遵循此协议，则不被允许使用此文件。
 *  你可以从下面的地址获取完整的协议文本
 *
 *       http://www.gnu.org/licenses/gpl.html
 */
package org.tinygroup.imda.processor;

import org.tinygroup.context.Context;
import org.tinygroup.imda.tinyprocessor.ModelRequestInfo;

/**
 * 参数构建器<br>
 * 
 * 利用上下文构建服务调用时的参数
 * 
 * @author luoguo
 * 
 */
public interface ParameterBuilder<T> {
	
	public static final String PAGE_SIZE="pageSize";
	public static final String PAGE_NUMBER="pageNumber";
	public static final String ORDER_BY_FIELD="sortField";//多个以逗号分隔
	public static final String SORT_DIRECTION="sortDirection"; 
	public static final String GROUP_BY_FIELD="groupByField"; 
	/**
	 * 检查并构建参数，如果参数已经存在，则不用管，如果参数不存在，则需要构建之
	 * 
	 * @param model
	 * @param context
	 */
	Context buildParameter(ModelRequestInfo modelRequestInfo, Context context);

}
